Revestimento de roscas helicoidais agrícolas a base de CRC depositado via HVOF posteriormente irradiadas com laser de Nd YAG e de CO2

Abstract

Aiming for improvements in the agroindustry sector as a greater efficiency in grain transport and reduction of preventive maintenance, the study describes an analysis between helicoids of grain conveyor threads made of 1020 steel without heat treatments, and the same steel with a coating layer ceramic sprayed with HVOF (high velocity oxygen fuel) based on chromium carbide and later treated with CO2 and Nd YAG lasers aiming the densification of the material. After deposition of the coating material and the laser irradiation process, comparative tests were performed between the different samples. The results obtained in the tests sought a solution to the problem of wear of helical threads brought to the grain industry through the surface coating of the same steel 1020 in order to present a satisfactory performance gain in relation to the use of the material without thermal treatments for the composition of helicoids with application in grain transport within the agroindustry sector.